County outline
Where Cass County is located
Area breakdown
Land accounts for 97.6% of Cass County’s measured area and water for 2.4%. Its combined area converts to 2,487.2 square kilometers or approximately 614,595 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 936.947 | 2,426.682 | 599,646.1 |
| Water | 23.357 | 60.494 | 14,948.5 |
| Total | 960.304 | 2,487.176 | 614,594.6 |
How Cass County compares
By original Census land area, Cass County ranks #91 of 254 in Texas and #761 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.031 times the Texas county-equivalent median of 908.7 square miles. It accounts for 0.4% of the combined county land area in the state.
See the complete Texas ranking · What counts as a county equivalent?
Population and density of Cass County
The Census Bureau estimates that 28,651 people lived in Cass County on July 1, 2025. That ranks #1,530 of 3,222 county equivalents nationally and #98 of 254 in Texas. Since the April 1, 2020 estimates base of 28,449, the population has grown by 202 (+0.7%), compared with +8.8% for Texas as a whole.
With 936.9 square miles of land, that is 31 people per square mile (12 per km²), placing Cass County #1,990 nationally for density and #107 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 21 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 28,441 | 28,565 | 28,495 | 28,637 | 28,686 | 28,651 |
| Change | — | +124 | −70 | +142 | +49 | −35 |
U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.
Cities and towns in Cass County
9 incorporated places lie at least partly in Cass County. Together they are home to 11,324 people (39.5%); the other 17,327 (60.5%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Atlanta city, with 5,478 residents in the county. The county seat, Linden city, has 1,809 residents. Among places with at least 1,000 residents in 2020, Atlanta city grew fastest since then (+0.8%).
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Atlanta city | 5,478 | +0.8% | 12.5 |
| Linden cityCounty seat | 1,809 | −0.8% | 3.53 |
| Hughes Springs cityAlso in 1 other county | 1,525 | −3.7% | 2.493 |
| Queen City city | 1,393 | −0.9% | 3.543 |
| Avinger town | 379 | 0% | 1.945 |
| Bloomburg town | 328 | +2.8% | 1.007 |
| Douglassville town | 214 | +0.9% | 6.326 |
| Marietta town | 115 | 0% | 0.578 |
| Domino town | 83 | +12.2% | 0.452 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Cass County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Cass County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
15 ZIP Code Tabulation Areas have land in Cass County; 13 of them have most of their land inside the county, and the others mainly cover neighboring areas.
755517555575556755607556275563755647556575566755687557275630756387565675657
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Cass County
Cass County shares a land border with 5 county equivalents, including 2 in Arkansas and Louisiana. It has more land than every one of them. The largest neighbor is Bowie County (884.9 mi²) and the smallest is Morris County (252 mi²). Together with its neighbors, Cass County forms a block of 3,958.4 mi² of land, of which it holds 23.7%.
| Bordering county equivalent | Land mi² | Size vs. Cass | Compare |
|---|---|---|---|
| Bowie County | 884.9 | 1.1× smaller | Compare |
| Caddo ParishLouisiana | 879.5 | 1.1× smaller | Compare |
| Miller CountyArkansas | 624.1 | 1.5× smaller | Compare |
| Marion County | 380.9 | 2.5× smaller | Compare |
| Morris County | 252 | 3.7× smaller | Compare |
How big is Cass County compared with U.S. states?
Cass County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.1 times as much. Texas’s county land could hold about 279 areas the size of Cass County.
Another way to picture it: the same land area would fill a square about 30.6 miles (49.3 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.
State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.
What stands out about Cass County?
Cass County has more land than 2,461 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places Cass County at #829 nationally by total area, 68 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 2.4%, compared with a national county-equivalent median of 1.2% — 1.3 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside Cass County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #760 | Comanche County, Texas | 937.8 | Compare |
| #761 | Cass County, Texas | 936.9 | This county |
| #762 | Sussex County, Delaware | 936.2 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 33.083698, -94.357579. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 2,426,682,329 m²; AWATER: 60,495,293 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Cass County?
Cass County, Texas has 936.9 square miles (2,426.7 km²) of land and 23.4 square miles of water, for a total area of 960.3 square miles. It ranks #761 of 3,222 U.S. county equivalents by land area.
Is Cass County the largest county in Texas?
No. Cass County ranks #91 of 254 in Texas by land area. The largest is Brewster County, with 6,183.8 square miles of land.
What counties border Cass County?
Cass County shares a land border with Bowie County, Marion County, Morris County, Miller County, Arkansas, and Caddo Parish, Louisiana.
What is the population of Cass County?
The Census Bureau estimates Cass County had 28,651 residents on July 1, 2025, ranking #1,530 of 3,222 county equivalents. That is 31 people per square mile of land.
What is the county seat of Cass County?
The county seat of Cass County is Linden.
What cities and towns are in Cass County?
Cass County has 9 incorporated places. The most populous five are Atlanta city, Linden city, Hughes Springs city, Queen City city, and Avinger town; 17,327 residents live outside any incorporated place.
Is Cass County part of a metropolitan area?
No. Cass County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Cass County?
15 ZIP Code Tabulation Areas have land in Cass County, and 13 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Cass County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.1 times as much land.
How many acres of land are in Cass County?
The land measurement converts to approximately 599,646 acres. Including water, total area is approximately 614,595 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.